LM4936MHX/NOPB

Audio Amplifiers Overview

The LM4936MHX/NOPB is a stereo audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It operates in Class-AB topology and delivers 2.2 W of output power into a 3 Ohm load. The device functions within a supply voltage range of 2.4 V to 5.5 V. Key performance metrics include a total harmonic distortion plus noise (THD+N) of 0.06% and a quiescent current of 10 mA. It utilizes an HTSSOP-28 surface-mount package and supports operation from -40°C to +85°C.

Audio Amplifiers Feature Summary

• Integrated two-channel stereo headphone amplifier architecture
• Class-AB operational mode for high-fidelity audio reproduction
• Low quiescent current consumption for battery efficiency

Audio Amplifiers Applications

• Portable audio devices requiring stereo amplification
• Headphone driver circuits in mobile electronics
• Battery-powered consumer audio equipment

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'X' indicates tape-and-reel packaging versus tube variants. Ensure RoHS compliance documentation matches the NOPB designation. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Audio Amplifiers Selection Notes

Select this component when a dual-channel solution is required for low-voltage stereo applications. The HTSSOP-28 package offers thermal performance suitable for compact layouts. Evaluate the 2.2 W output capability against the specific impedance of the connected load to ensure adequate headroom without clipping.

Audio Amplifiers Part Context

This part belongs to the LM4936 series of audio amplifiers. It represents the transition period where National Semiconductor products were integrated into Texas Instruments' portfolio. The device serves as a dedicated solution for driving headphones or small speakers in portable media players and similar handheld devices.